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HD4046212RFS Datasheet(PDF) 44 Page - Renesas Technology Corp |
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HD4046212RFS Datasheet(HTML) 44 Page - Renesas Technology Corp |
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44 / 157 page  HD404629R Series 42 Notes: 1. When watch or subactive mode on HD404629R Series/HD4074629 is used and the LCD function is off in that mode, the watch mode or subactive mode current is larger, and consequently the following settings should be made. Perform the following writes in the order shown before the transition to watch mode (before execution of the STOP instruction): Write $0 to LCR Write $3 to LMR Also, when returning to active mode from watch mode or subactive mode, perform the following writes in the order shown: Write a value appropriate to the conditions of use to LMR Write a value appropriate to the conditions of use to LCR A sample programming flowchart for the above procedures is shown in figure 23. .. . LMR LCR .. . Initialization routine Include these operations .. . LCR = $0 LMR = $3 .. . Main routine STOP instruction Watch mode Or transition to subactive mode .. . LMR LCR .. . Set appropriate values for active mode INT or timer A interrupt processing routine 0 After the MCU enters active mode again Set appropriate values for active mode Figure 23 Programming Flowchart (LCD Display Off in Watch or Subactive Mode) |
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